21015074

Names of 21015074

• Cardinal: 21015074 can be written as Twenty-one million, fifteen thousand and seventy-four.

Scientific notation

• Scientific notation: 2.1015074 × 10⁷

Factors of 21015074

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 47344

Divisors of 21015074

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 223 446 47119 94238 10507537 21015074
• Sum of all divisors σ(n): 31664640
• Sum of proper divisors (its aliquot sum) s(n): 10649566
• 21015074 is a deficient number, because the sum of its proper divisors (10649566) is less than itself. Its deficiency is 10365508

Bases of 21015074

• Binary: 1010000001010101000100010₂
• Hexadecimal: 0x140AA22
• Base-36: CIFC2

Squares and roots of 21015074

• 21015074 squared (21015074²) is 441633335225476
• 21015074 cubed (21015074³) is 9280957220630184825224
• The square root of 21015074 is 4584.2201081535
• The cube root of 21015074 is 275.9584145847

Scales and comparisons

• 21,015,074 seconds is equal to 34 weeks, 5 days, 5 hours, 31 minutes, 14 seconds.
• To count from 1 to 21,015,074 would take you about twenty hours!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21015074 cubic inches would be around 23 feet tall.

Recreational maths with 21015074

• 21015074 backwards is 47051012
• The number of decimal digits it has is: 8
• The sum of 21015074's digits is 20
• More coming soon!